A 225 block of ice sits on a level table.

a) identiy the forces that act on the block and determine their magnitudes.

gravity acts on the block, as does the table upward.

how can i determine the magnitudes?

To identify the forces acting on the block of ice, we need to consider the different types of forces that may be involved. In this scenario, we can consider the following forces:

1. Gravitational Force: The force of gravity acting on the block of ice pulls it downward. The magnitude of this force can be determined using the formula F = mg, where m is the mass of the object and g is the acceleration due to gravity. Assuming a gravitational acceleration of 9.8 m/s², and if the mass of the block of ice is 225 kg, then the magnitude of the gravitational force would be F = (225 kg) × (9.8 m/s²) = 2,205 N.

2. Normal Force: The normal force is the force exerted by a surface to support the weight of an object resting on it. Since the block of ice is on a level table, the normal force will be equal in magnitude and opposite in direction to the gravitational force. So, the magnitude of the normal force would also be 2,205 N.

These two forces, the gravitational force and the normal force, are the primary forces acting on the block of ice in this situation.